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| All Patents in class 198/737 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,258,858 | Mar. 12, 1918 | R.D. Bell | Straw-Stacker for Threshing Machines | hay or straw stackers | |
| 3,062,353 | Nov. 06, 1962 | O.A. Opperthauser | Work transfer mechanism | workpiece changers and storage mechanisms | |